Disk free space slowly disappears.

磁盘空闲空间缓慢消失。

This is called overwriting free space.

这就叫做覆盖自由空间。

Free space calculation is more accurate.

自由的空间计算更加准确。

Few GB of free space on your hard drive.

硬盘上有几个G的剩余空间。

action=6 means that free space is very low.

action=6 表示空闲空间非常低。